ismat rubber
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Transmission Products

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L Type – Standard Jaw Coupling
  • Industry’s standard shaft coupling
  • Fail-safe (will still perform if elastomeric “spider” fails)
  • Max Bore: 2.875 inches (73 mm)
  • Max Torque: 12,500 in-lbs (1412 Nm)

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AL Type – Aluminum Jaw Coupling
  • Lightweight aluminum version of the standard shaft coupling
  • Corrosion resistant (finished bores passivated for added protection)
  • Max Bore: 1.875 inches (48 mm)
  • Max Torque: 2,268 in-lbs (256 Nm)

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SS Type – Stainless Steel Jaw Coupling
  • Stainless steel version of the industry standard shaft coupling
  • Interchangeable with L and AL line of hubs (except AL150)
  • Max Bore: 1.875 inches (48 mm)
  • Max Torque: 3,708 in-lbs inches (419 Nm)

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SW Type – Radially Removable Elastomer
  • Standard L type coupling with radially removable elastomer
  • Fail-safe; plus open center allows for minimal shaft separation
  • 1,750 RPM limit (see LC type for higher limit)
  • Max Bore: 2.125 inches (55 mm)

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C Type – Higher Torque Jaw Coupling
  • Greater torque and bore capacity (compared to L type)
  • Fail-safe; plus radially removable elastomeric cushions
  • Max Bore: 4.000 inches (102mm)
  • Max Torque: 37,800 in-lbs (4271 Nm)

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RRS/RRSC Type – Radially Removable Spacer Coupling
  • Spacer coupling with “drop out” center for proper separation
  • Radially removable elastomers (easy installation & maintenance)
  • US and European industry standard pump/motor shaft separations
  • Spacer made of glass reinforced plastic, cast iron, or aluminum

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RRC Type – Radially Removable Spacer Coupling
  • Larger version of RRS/RRSC type couplings
  • Spacer coupling with “drop out” center for proper separation
  • Radially removable elastomers (easy installation & maintenance)
  • Spacer made of glass reinforced plastic, cast iron, or aluminum

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LC Type – Radially Removable Elastomer
  • Standard L type coupling with radially removable elastomer
  • Higher RPM limit (compared to SW) of 3,600 RPM
  • Fail-safe; plus open center allows for minimal shaft separation
  • Max Bore: 2.625 inches (65 mm)

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  • Products
    • Rubber Sheet
    • Rubber Beading
    • Profiles
    • O-Ring
    • O-ring Kits
    • Oil Seal
    • Hydraulic Seals
    • Self Adhesive
    • Transmission Products
    • Anti-Vibration Mounts
    • Silicone Tube
    • Weather Tapes
    • Custom Molded Components
  • Rubber Tech
  • About
  • Contact
  • Other Divisions